Yahoo and Microsoft have both revealed plans to create their own TV shows in the ever-expanding battle for the living room. Yahoo has unveiled plans for four shows, while Microsoft is believed to have 12 in development. They will go up against Amazon, Hulu and Netflix, all of whom are also commissioning their own shows in a bid to change they way we watch TV. Yahoo chief executive Marissa Mayer has unveiled plans to break into television-style original video with the launch of two original comedy series and an internet channel that will stream live concerts. Amazon last week unveiled a $99 TV box to take on Apple, Google and Roku - and it doubles as a games console.